Always look for simple water activities, such as water painting. Find nature items that can be glued to aboard to make a picture, frame with pop sticks etc.

Look for rocks to paint or pick flowers and make a flower crown or even pressed flowers.

If you have a old cubby house get the kids to paint it and do a makeover. My children loved it they pick out everything them self

Pinterest have some really fab ideas. I’m keen to make a giant jenga set for our backyard and giant marble run.

make bubbles, make bath paint, paint pics, do a giant mural, make animals out of egg cartons

make finger paint from flour or cornflour

Bubble/foam fun, slip ‘n’ slide, ice block paintings, draw on the cement areas with chalk, play under the sprinkler, you can get a sprinkler ball that connects to your hose and you can throw it to each other, make up an obstacle course with a few things and maybe include a small pool =)

Imagination is always great

Making a cubby is a great holiday activity. Or, I used to make little towns with log cabins and dirt roads when I was a kid. I did this with my kids. You can let your imagination run wild

Some really cool ideas, liking all of them!

Make some daisy chains or necklaces with whatever is available,frangipanis.

Paper mache stuck on a balloon is a fun way to use up the old papper pop it and then paint it you could use old egg cartons stuck on it as ear or a nose then papper mache over it for it to be smooth. kids just love this as it takes time and effort and a couple of coats to look good.

collect sticks and flowers and make a collage with them

Make a garden.
Flowers, vegetable or both.
You could paint plaster moulds, the sand bottle things where you layer the multi colour sands. You could make a puppet theatre.
Picnic lunches are a lot of fun as well.

Anything messy is great to do outside. Think sand castles, play dough, sensory bins, sidewalk chalk, painting. There are so many good ideas on the net, especially pinterest,